AWGC provides a walk-in service for made-to-order double-glazed units for doors and windows. You can customize your made to measure units with the customization options available, including glass type, spacer bar colour, and gas filling, size, thickness, and toughening. Our professional glaziers will explain the importance of the U Value and its relation to the type of glass and glass filling. The U Value is the measurement standard of how much heat is lost through the unit. You require a lower U value to have a better sealed unit. You can even choose to have vent hole cut outs, which are suitable for use with cat flaps. With this service, you can have any double glazing made to order. Call 020 3553 8445 if you require cut to size double glazed units in the Essex and London areas or walk in our glass store!